Tool/software:
Hi TI team,
When I test as below setup, IC burnt at the moments of turning on.
- Input : 48V, already supplied.
- Output : No load, just connected E-load.
- EN, INP : Connected 3.3V pull-up register by switch.
Step1 : The input voltage has already reached 48V.
Step2 : I turn the switch on for EN and INP. At this moments, IC is burnt.
I suspected, the voltage damaged IC internally, because when I had same test using 12V, it works well.
Also, when I set the EN&INP pin connect to VS using resistor divider, it works well at 48V.
How can I prevent IC burnt?
For your information, my schematic already attached other question.
enable switch as below diagram.
Thank you in advance.
